ate_example |>
summarise(
mean_outcome = mean(outcome),
sd_outcome = sd(outcome),
n = n(),
.by = treated
)# A tibble: 2 × 4
treated mean_outcome sd_outcome n
<chr> <dbl> <dbl> <int>
1 Yes 6.06 1.03 527
2 No 5.03 0.959 473